Lustrousstone's a professional copy editor, a personal friend, and also interested in Mdina, Angela!
But oh dear, Angela some of the things/pipe dreams you're mentioning, (eg folk who have talked to Michael Harris at the time, or finding somebody who worked there at the time and getting their perspective) would be fabulous to find, but lots of folk have been trying to track down such "rocking-horse droppings" - to use Ron's turn of phrase, for years, without success.
I'm not sure if I know of anybody who has specialised in paperweights. I have a few (probably quite a lot, actually) but only really by accident....... :spls:
More than likely enough though.